Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
  • Effective date searches are available only for US area codes. Our sources for non-US NPA-NXX data do not provide this information.
  • If you want to search an entire area code regardless of activity, leave both the next and past days fields set to zero.

Carlock, IL

NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
309-376 A CRLCILXDRS0  1015 FRONTIER NORTH, INC. - IL 366      
309-376 0   5800 ITV 3, LLC DBA I3 BROADBAND 366   2003-08-24   
309-376 1   224C ONVOY, LLC 366   2019-07-14   
309-376 2   1015 FRONTIER NORTH, INC. - IL 366      
309-376 3   1015 FRONTIER NORTH, INC. - IL 366      
309-376 4   1015 FRONTIER NORTH, INC. - IL 366      
309-376 5   224C ONVOY, LLC 366   2020-05-21   
309-376 6   224C ONVOY, LLC 366   2019-01-17   
309-376 7   7575 CENTURYLINK COMMUNICATIONS LLC 366   2014-07-29   
309-376 8   6115 LEVEL 3 COMMUNICATIONS, LLC - IL 366   2004-07-16   
309-376 9   224C ONVOY, LLC 366   2019-07-14   

Last updated: Thu, 10 Sep 2020 02:15:24 UTC

Sponsored by: Callcentric - VoIP Internet phone service

Like this site? We accept donations via PayPal.